Steam-engine.



PATENTBD MAR. 3, 1908.

W. H. BBTTS. STEAM ENGINE.

APPLICATION FILED JUNE 4.1907.

I aktozmu narran STATES,

WALTER H. BET'IS, OF ADMIRE, KANSAS.

STE .AM-ENGINE Specification of Letters Patent.

Patented March 3, 190s.

Application led June 4, 1907. Serial No. 377,215. l

To @ZZ whom it may concern:

Bc it known that I, WALTER ll. Bn'r'rs, a

citizen of the United States, residing at Admire, in the county of Lyonand State of lansas, have invented neuy and useful linprovemcnts inSteam-Engines, of which the 'following is a specification.

rlhis inventimi relates to a double-acting engine of that type in whichthe admission and exhaust of the motive. fluid to and from the cylinderare controlled by the movement of the piston, whereby the more or lesscomplicated valve mechanism commonly employed is dispensed With.

The invention has for one of its objects to improve and simplify theconstruction and operation of engines of this character so to becomparatively easy and inexpensive to manufacture, thoroughly reliableand eilicient in use, and readily.controlled.

A further object of the invention is the provision of an engine Withinthe cylinder of which is a hollow cylindrical member that rcceives thepiston and is actuated at the end of each stroke of the latter foropening an inlet port on one side of the piston and simultaneously.opening the exhaust port on the opposite side, so that the admission andexhaust of steam can be controlled automat- `ieally to effect thecontinuous operation4 of the engine.

A still further object is the employment of a reversing mechanismwhereby the inner reciprocating cylinder can be adjusted to reverse theengine.

W'ith these objects in view and others, as will appear asthe descriptionproceeds, the invention comprises the various novel features ofconstruction and arrangement: of parts which will be morelfullydescribed-hereinafter and set forth with particularity in the claimsappended hereto.

In the accompanying drawing, which illustrates one of theembodiments ofthe invention, Figure 1 is a longitudinal vertical section of a singlecylinder, double-acting engine. Figf2 isl a longitudinal section of theinner c linder or valve of the engine.

Eindigt-r reference characters are employed to designate correspondingparts throughout the several views.

Referring to thedrawmg, 1 designates the.

bed of the engine; 2, the cylinder mounted at one end thereof and inwhich is a piston 3 that imparts rotation to the crank shaft 4,

. through the piston rod 5,v cross-head 6, and

connecting rod 7, the cross-head being arranged to reciprocate in aguide 8 on the bed l. These parts of the engine may be of any approveddesign as far as the present invention is concerned. v

0n the cylinder 2 is a steam chest=9 that is suppliedwith live steam bythe pipe 10 that is provided with a controlling valve 11, and betweenthe steam chest and cylinder 2 from the heads of the cylinder to providefor the necessary compression at the ends of the strokes of the pistonv3. 'Arranged at the suitable point are exhaust ports 13 to which areconnected a branch exhaust pipev 14. The inlet and exhaust ports of thecylinder 15 that constitutes a single valve for all the ports. The innercylinder has a Working fit in the main cylinder and is adapted to moveback and forth therein and the piston 3 reciprocates Within the inner`cylii'ider Which is carefully finished .to 'insure a Working it withthe piston. The hollovsT cylindrical valve 15 is provided with inletports 16, so arranged that one or theother can be brought into registerwith one of the inlet ports 12, so that steam can be admitted to oneside of the piston while it is cut off from the other side. The member15 is also provided With exhaust ports 17 arranged to register one at atime with the stationary exhaust ports 13 and the relation of thevariousports is such that -while ysteam isladmitted to one side of thepiston, it exhausts from the other side.

1,5 are annular grooves for receiving packing lrings 18 vfor reventing.leakage. Adjacent the ends of t 1e valve 15 are internal stops,pro'ections or abut-ments 19 disposed in the pat of the pistons 3, sothat as the latter n ears the end of 4its stroke in either direction, itwill engage oneL of the abutments 19 and impart longitudinal movement tothe valve for simultaneouslycuttingioff steam from \of the piston.

moved backend forth directly by the piston to control the admission andexhaust for effecting the continuous reciprocation of the; piston.

ment of the engine, provision is made to this purpose, the latter isprovided With a are inlet ports 12 spaced slightly inwardlyopposite sideof the cylinder or at any other' 2 are opened and closed by an innercylinder' In the outer surface of the cylindrical valve shift theposition of the valve 15, and for' one side and admitting it to theother side In this manner, the valve is In order to reverse thedirection of movei 30 f vvalve-chest.

lor stops 24 for engaging with t central arm or post having a threadedarm 20 passes through an opening 21 in the Wall of the cylinder 2 andprojects into the valve chest 9. 4The arm has an opening 22 forreceiving the inner end of an 'actuating rod 23 that is provided withadlustable'nuts shift the valve 15 in one direction or the other. Therod 23 extends throu h the wall of the steam chest and is hin ed yconnected with an operatin lever 25 ulcrumed on a bracket 26 carriedgbythe rear head of the cylinder. The lever is provided with a latch 27enga g a toothed section 28 on lthe bracket, v'W ereby the lever can beheld in adjusted position. Normally the valve orinner1c` 1inder 15 movesback and forth between't enuts 24 without interference,

' and by operating the lever 25, the valve 15,

` can be shifted 'of travel.l

;in Fig. 1, 'it 1s merely necessary themethod of operation will bereadily apl When it is desired to reverse the engine and thepiston ismoving to the left as shown to throwthe lever'y 25 to such a position asto cause theleft hand inlet port of th'e cylindrical valve 1 5 toregister with ,the left-hand port of the This will admit steam to theleft side of the iston and cut oil' the supply to the right 'si e andthereby cause the engine to reverse. As soon as the piston starts onlitsreverse stroke, the lever is ladjusted and locked in such a position asto permit the ,valve 15'to be actuated by the piston, as p before,whereby theengine will continue to operate in a reverse direction.' i yl From the fore oing description, taken in yconnection with teaccornpanying drawing, the ,advantages of the construction and of epost 20 to 4 so aste reverse the direction v arent to those skilled 1ntne art to which thc 1nvent1on appertarns; and while l` have describedthe principle of operation of the in-- vention, together 1th theapparatus which l now consider to be the best embodiment thereof, ldesireto haye it understood that the apparatus shown 1s v merelyillustrative and that such changes may be madewhcn desired as are nithin the scope of the claims.

Having thus described the invention, what|- l claim ist' l 1. ln anengineLthe combination of a cylinder having inlet andexhaust ports, acylinderthereinI havingv inlet and exhaust portsv and movablelongitudinally to alternate/ly bring corresponding ports into register,a piston reciprocating in th'e inner cylinder and adapted to close theports at the ends of the strokes, means on the inner cylin-4 denierengaging the piston to receive motion thereform, and a manual means foradjusting the inner cylinder to reverse the engine.

2. In an engine, the combination of a stationary outer cylinder havinginlet and me.

vhaust ports, an inner cylinder mounted for reciprocation and havingregister with those of the outer cylinder, a piston reciprocating Withinthe inner cylinder and adapted lto impart motion thereto at the end ofeach stroke, a removable member ion the inner cylinder .and extendinginto the Ysteam chest, an actuating red, an adjustable lost motionconnection between the member and rodv and located Within the chest, anda manually actuated means connected with the rod for reversing theengine.

ln`testirnony whereof', I atix my signature in presence 'of twoWitnesses.

WALTER H.4 Barre.

ports'adapted to

